TWI543476B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an arrangement of a patch transformer in an electrical connector.

An electrical connector comprising an insulative housing and a magnetic module mounted on the insulative housing, the magnetic strip module having a circuit board and an insulative body disclosed in Chinese Patent No. CN201355718Y, issued on Dec. 2, 2009. A wound-type transformer and a wound common mode suppressor mounted on a circuit board. However, since it is necessary to manually wind the enameled wire to the butt terminal and the pin terminal, the production time is long and the production efficiency is extremely low.

Taiwan Patent No. TWM437561U1, published on Sep. 11, 2012, discloses an electrical connector having a circuit board and a chip-type transformer and a chip-type common mode suppressor mounted on the circuit board. However, such a board is bulky and can only be used in larger electrical connectors.

The technical problem to be solved by the present invention is to provide an electrical connector having a magnetic module, the magnetic module comprising a circuit board and a plurality of chip-type transformers mounted on the circuit board, wherein the plurality of chip-type transformers are mounted on On the same side of the circuit board, by arranging the spatial position of the plurality of chip-type transformers, the volume of the circuit board can be minimized and the electrical performance is good.

In order to solve the above technical problems, the present invention adopts the following technical means:

An electrical connector includes an insulative housing and a terminal module mounted in the insulative housing, the insulative housing is provided with a front end opening for receiving a receiving cavity of the network plug, and the terminal module includes a mating terminal extending into the receiving cavity a pin terminal for mounting on an external substrate, and a magnetic module connected between the mating terminal and the pin terminal, the magnetic module comprising a circuit board and four chip transformers mounted on the same side of the circuit board The circuit board includes a first connecting portion and a second connecting portion disposed at both longitudinal ends thereof, and a first side edge and a second side edge disposed at both lateral ends thereof, the docking terminal being connected to the first connecting portion The pin terminal is connected to the second connecting portion, the first transformer of the four chip transformers is adjacent to the first side edge, the fourth transformer is adjacent to the second side edge, and the second transformer and the second direction are in the lateral direction The third transformer is located between the first transformer and the fourth transformer, and the projections of the second transformer and the third transformer in the longitudinal direction at least partially overlap.

Compared with the prior art, the present invention provides two chip-type transformers on both edges of the circuit board, and two longitudinally arranged chip-type transformers are arranged in the middle of the circuit board, so that the size of the circuit board is small. The electrical performance is good and the electrical connector can be made smaller.

1. . . Insulating body

100. . . Electrical connector

11. . . Docking surface

12. . . Rear end face

13. . . Side wall

14. . . Top wall

15. . . Containment chamber

16. . . Containing space

17. . . Storage slot

20. . . Insulating carrier

200. . . Substrate

201. . . Locating slot

twenty one. . . Docking terminal

211. . . Docking

212. . . Welding department

twenty two. . . Pin terminal

221. . . Soldering feet

222. . . Extension

3. . . Magnetic module

31. . . Circuit board

311. . . First side

312. . . Second side

313. . . First connection

3131. . . Third soldering through hole

314. . . Second connection

3141. . . First solder via

3142. . . Second solder via

315. . . First side edge

3151. . . First weld gap

316. . . Second side edge

3161. . . Second weld gap

32. . . transformer

321. . . First transformer

322. . . Second transformer

323. . . Third transformer

324. . . Fourth transformer

325. . . I-shaped core

326. . . Cover core

33,331,332. . . Common mode suppressor

34. . . resistance

35. . . capacitance

4. . . led

41. . . illuminator

42. . . stitch

5. . . Shaded housing

51. . . Side shell

511. . . Extension piece

55. . . Primary coil

551. . . Primary coil electrode

56. . . Secondary coil

561. . . Secondary coil electrode

The first figure is a perspective view of the electrical connector of the present invention mounted on an external substrate.

The second figure is an exploded perspective view of the electrical connector shown in the first figure.

The third figure is an exploded perspective view of another view of the electrical connector shown in the second figure.

In the fourth figure, (a) is a top view of the magnetic module shown in the second figure, and the conductive path of the circuit board is omitted; (b) in the fourth figure is the electronic component on the (a) circuit board in the fourth figure. Omitted, and the soldering electrode piece of the electronic component is projected onto the conductive sheet on the circuit board to show the high voltage end or the low voltage end of the electrode piece connection.

In the fifth figure, (a) is a bottom view of the magnetic module shown in the second figure, and the conductive path of the circuit board is omitted; in the fifth figure, (b) is the electron on the circuit board in the fifth figure (a). The component is omitted, and the soldering electrode piece of the electronic component is projected onto the conductive sheet on the circuit board to exhibit the high voltage end or the low voltage end of the electrode sheet connection.

Figure 6 is a schematic diagram of the electrical connection of the electrical connector shown in the first figure.

As shown in the first figure, the electrical connector 100 in accordance with the present invention can be mounted on a substrate 200.

As shown in the second to third figures, the electrical connector 100 includes an insulative housing 1, a terminal module, two light emitting diodes 4, and a shielding housing 5. The insulative housing 1 includes an abutting surface 11 , an end surface 12 parallel to the mating surface 11 , two side walls 13 extending from the mating surface 11 to the rear end surface 12 , and a top wall 14 . The two side walls 13 and a top wall 14 surround the front end of the insulating body 1 . A receiving cavity 15 is formed, and the two side walls 13 and a top wall 14 define a receiving space 16 at the rear end of the insulating body 1. The receiving cavity 15 formed by the opening of the front end of the insulative housing 1 is for receiving a network plug, and the receiving space 16 is used for mounting the terminal module. The insulative housing 1 is disposed above the receiving cavity 15 with a receiving slot 17 adjacent to the two side walls 13. The LED 4 can be mounted in the receiving slot 17 from the rear to the front.

As shown in the second figure, the terminal module includes a mating terminal 21 extending into the receiving cavity 15, an insulative carrier 20 for mounting to the pin terminal 22 of the substrate 200, the fixed mating terminal 21 and the pin terminal 22, and a connection terminal. The magnetic module 3 between the 21 and the pin terminal 22. The butt terminal 21 is insert-molded to the front end of the insulating carrier 20, and the pin terminal 22 is interference-held at the rear end of the insulating carrier 20. The butt terminal 21 has an abutting portion 211 located in the receiving cavity 15, an embedded portion (not shown) embedded in the insulating carrier 20, and a welded portion 212 protruding from the insulating carrier 20 for soldering to the magnetic module 3. The pin terminal 22 has a soldering leg 221 for patch-bonding to the substrate 200, a holding portion (not shown) extending vertically upwardly and perpendicular to the soldering leg 221, and being held by the insulating carrier 20 (not shown), and for soldering to magnetic The extension 222 of the module. The magnetic module 3 includes a circuit board 31 and four chip transformers 32 mounted on the circuit board 31. An accommodating groove 201 is disposed between the mating terminal 21 and the pin terminal 22, and the accommodating groove 201 accommodates the electronic components on the circuit board 31 therein. The circuit board 31 includes a first side 311 and a second side 312 which are oppositely disposed. The second side 312 faces the insulating carrier 20. The receiving slot 201 cannot accommodate the lower chip transformer 32 due to the height limitation of the receiving slot 201. The height of the four chip transformers 32 can only be mounted on the first side 311 of the circuit board 31.

As shown in the fourth diagram (a), the circuit board 31 includes a first connection portion 313 and a second connection portion 314 disposed at both longitudinal ends thereof, and a first side edge 315 and a second side edge 316 at both lateral ends thereof. The docking terminal 21 is connected to the first connecting portion 313, and the pin terminal 22 is connected to the second connecting portion 314.

Referring to FIG. 2, FIG. 4(a), FIG. 4(b) and FIG. 6 , the four transformers 32 each include a primary coil 55 electrically connected to the mating terminal 21 and electrically connected to the pin. a secondary winding 56 of the terminal 22, an I-shaped iron core 325 for winding the primary winding 55 and the secondary winding 56, a cover core 326 covering the I-shaped iron core 325, and an I-shaped iron The end of the core 325 is for connecting the primary coil sheet 551 of the primary coil 55 and the secondary coil tab 561 for connecting the secondary coil 56. The primary coil electrode sheet 551 and the secondary coil electrode sheet 561 are soldered to the conductive sheets on the circuit board 31. The I-shaped iron cores 325 of the four transformers 32 are longitudinally disposed, and the primary side coil electrode sheets 551 of the four transformers 32 are disposed laterally opposite to the secondary side coil electrode sheets 561. The secondary side coil electrode piece 561 of the first transformer 321 is adjacent to the first side edge 315, the secondary side coil electrode piece 561 of the fourth transformer 324 is adjacent to the second side edge 316, and the primary transformer coil electrode of the second transformer 322 and the third transformer 323 The sheet 551 is disposed opposite to the primary coil sheet piece 551 of the first transformer 321. The docking connector of the electrical connector 100 is a network plug connector (RJ45), which transmits a signal to the docking terminal 21 by being exposed to the outdoor network cable, and the pin terminal 22 is connected to the substrate 200 (usually the computer motherboard has a chip On it). Therefore, it is assumed that the docking terminal 21 is a high voltage end and the pin terminal 22 is a low voltage end. The primary side coils 55 of the first to fourth transformers are connected to the high voltage end of the mating terminal 21, and the shielding case 5 is connected to the low voltage end of the substrate 200, and the secondary side coil electrode piece 561 of the first transformer 321 is adjacent to the first side edge. 315. The secondary side coil electrode piece 561 of the fourth transformer 324 is adjacent to the second side edge 316, that is, the low voltage end and the low voltage end are disposed adjacent to facilitate high voltage protection.

The first transformer 321 is adjacent to the first side edge 315, the fourth transformer 324 is adjacent to the second side edge 316, and the second transformer 322 and the third transformer 323 are located between the first transformer 321 and the fourth transformer 324 in the lateral direction, and The projections of the second transformer 322 and the third transformer 323 in the longitudinal direction at least partially overlap. The four chip transformers 32 are arranged on the same side of the circuit board 31, and there are two options as follows:

1). The four patch transformers 32 are laterally aligned in a row. Since the welding space is required between each of the two transformers 32, if set, the lateral dimension of the circuit board 31 is necessarily increased.

2). The four chip-type transformers 32 are aligned in the horizontal and vertical directions in two rows and two columns. However, since the first soldering vias 3141 of the light-emitting diodes 4 connected to both sides of the circuit board 31 are close to the limit, it is necessary to increase the circuit board. The vertical dimension of 31 can be satisfied.

In the present invention, two transformers 32 are disposed on both sides of the circuit board 31, and the other two transformers 32 are disposed in the middle of the circuit board 31. If provided, the area of the circuit board 31 can be minimized and optimized. If the distance between the high voltage end and the low voltage end after the arrangement is greater than 1.35 mm, the required distance of the high voltage end and the low voltage end by the 1500 V safety test may be greater than 1.2 mm, so the invention can meet the safety requirements.

The first side edge 315 is provided with a first soldering notch 3151 for connection with the shielding housing 5, and the second side edge 316 is provided with a second soldering notch 3161 for connection with the shielding housing 5. The first weld notch 3151 and the second weld notch 3161 are laterally aligned, and the first transformer 321 and the fourth transformer 324 are also laterally aligned and adjacent to the first weld notch 3151 and the second weld notch 3161, respectively. The secondary side coil electrode piece 561 of the first transformer 321 is adjacent to the first welding notch 3151, and the secondary side coil electrode piece 561 of the fourth transformer 324 is adjacent to the second welding notch 3161. A portion of the second transformer 322 is located in a laterally aligned space of the first transformer 321 and the fourth transformer 324, and a portion of the third transformer 323 is also located in a laterally aligned space of the first transformer 321 and the fourth transformer 324, and another portion of the second transformer 322 Near the first connection portion 313, another portion of the third transformer 323 is adjacent to the second connection portion 314. The projections of the second transformer 322 and the third transformer 323 in the longitudinal direction only partially overlap, that is, the second transformer 322 and the third transformer 323 are staggered in the longitudinal direction to facilitate wiring on the circuit board 31 and increase the second transformer 322. The distance between the low voltage end and the high voltage end of the third transformer 323.

The electrical connector 100 further includes four patch type common mode suppressors, wherein two patch type common mode suppressors 331 are mounted on the first side 311, and the other two patch type common mode suppressors 332 are mounted on the second side. 312. Since the four transformers 32 are mounted on the first side 311 of the circuit board 31, the space of the first side surface 311 is extremely limited. If the four common mode suppressors 33 are all mounted on the second side 312 of the circuit board 31, the number of the transformers 33 is increased. A conductive via is formed on the upper surface of the circuit board 31. The two chip-type common mode suppressors 331 are mounted on the first side 311, and the other two chip-type common mode suppressors 332 are mounted on the second side 312, which minimizes the capacitance caused by the increase of the conductive vias. effect. As shown in the sixth and fourth diagrams (a), the patch type common mode suppressor 33 is connected to the high voltage end of the mating terminal 21, and the four common mode suppressors 33 are disposed longitudinally, which facilitates the wiring distance of the circuit board 31. Short, better electrical performance. Since the common mode suppressor 33 is connected to the high voltage end of the mating terminal 21, the two chip type common mode suppressors 331 on the first side surface 311 are mounted near the first connection portion 313, which also reduces wiring. Difficulty and improved electrical performance.

As shown in the fifth (a) and (b), the second side surface 312 is further provided with four chip resistors 34 and a chip capacitor 35. The receiving groove 201 of the insulating carrier 20 can accommodate the sticker. The height of the chip common mode suppressor 33, the chip resistor 34, and the chip capacitor 35. Referring to the fifth (a), fifth (b) and sixth figures, the common mode suppressor 332, the resistor 34 and the capacitor 35 are both connected to the high voltage terminal of the butt terminal 21.

As shown in the fourth diagram (a), the circuit board 31 has a first soldering via 3141 for inserting and mounting the LED 4, and the first connecting portion 313 has a third soldering via 3131 laterally arranged in a row. The two connecting portions 314 have second soldering through holes 3142 that are laterally arranged in two rows. The butt terminal 21 is welded to the third solder via 3131, and the pin terminal 22 is soldered to the second solder via 3142. The first transformer 321 and the fourth transformer 324 are disposed at a middle position between the third soldering via 3131 and the first solder via 3141, and the distance between the low voltage end thereof and the butting terminal 21, and the high voltage end of the pin terminal 22 The best distance is beneficial to the electrical performance of the electrical connector 100.

As shown in the second figure and the fourth figure (a), the two LEDs 4 can indicate the communication status of the electrical connector 100. The two LEDs 4 each include an illuminant 41 mounted on the insulative housing 1 and mounted on the circuit board 31. The pins 42 of the through holes 3141 are soldered, and the connection of the pins 42 to the circuit board 31 (the first solder vias 3141) is adjacent to the first side edge 315 or the second side edge 316. The circuit board 31 is horizontally disposed in the insulative housing 1. The illuminant 41 is mounted in the front receiving slot 17 of the insulative housing 1. The pins 42 extend horizontally rearward from the receiving slot 17 and are vertically bent and soldered to the rear end of the circuit board 31. A soldering through hole 3141. The first solder via 3141 is located between the first transformer 321 and the second solder via 3142 or between the fourth transformer 324 and the second solder via 3142. If the pin 42 of the LED 4 is mounted between the first transformer 321 or the fourth transformer 324 and the third soldering via 3131, since the LED 4 needs to be electrically connected to the pin terminal 22, and the transformer 31 on the circuit board 31 And the wiring space limitation of the common mode suppressor 33 will cause the conductive path connecting the light emitting diode 4 and the pin terminal 22 to be arranged on the other two layers, that is, the circuit board 31 is required to be a four-layer board, thus increasing The manufacturing cost of the electrical connector 100. In addition, if the pin 42 of the LED 4 is mounted between the mating terminal 21 and the transformer 32, since the LED 4 is a low voltage end and the mating terminal 21 is a high voltage end, a high voltage isolation tape is required to isolate it.

In the present invention, the pin 42 of the LED 4 is mounted between the pin terminal 22 and the transformer 32, and the conductive path connecting the pin 42 of the LED 4 to the pin terminal 22 is shortened, and only the circuit board 31 is a two-layer board. The requirements are met and the high pressure insulation tape is omitted.

As shown in the third figure, the shielding case 5 has a side case 51 surrounding the side wall 13 of the insulative housing 1, and the side case 51 extends inwardly for extending the first welding notch 3151 and the second welding notch 3161. .

311. . . First side

313. . . First connection

3131. . . Third soldering through hole

314. . . Second connection

3141. . . First solder via

3142. . . Second solder via

315. . . First side edge

316. . . Second side edge

321. . . First transformer

322. . . Second transformer

323. . . Third transformer

324. . . Fourth transformer

331. . . Common mode suppressor

551. . . Primary coil electrode

561. . . Secondary coil electrode

Claims (10)

An electrical connector includes an insulative housing and a terminal module mounted in the insulative housing, the insulative housing is provided with a front end opening for receiving a receiving cavity of the network plug, and the terminal module includes a mating terminal extending into the receiving cavity a pin terminal for mounting on an external substrate, and a magnetic module connected between the mating terminal and the pin terminal, the magnetic module comprising a circuit board and four chip transformers mounted on the same side of the circuit board The circuit board includes a first connecting portion and a second connecting portion disposed at both longitudinal ends thereof, and a first side edge and a second side edge disposed at both lateral ends thereof, the docking terminal being connected to the first connecting portion The pin terminal is connected to the second connecting portion, wherein the first transformer of the four chip transformers is adjacent to the first side edge, and the fourth transformer is adjacent to the second side edge, and is in the lateral direction The second transformer and the third transformer are located between the first transformer and the fourth transformer, and the projections of the second transformer and the third transformer in the longitudinal direction at least partially overlap. The electrical connector of claim 1, wherein the electrical connector further comprises two light emitting diodes indicating communication status of the electrical connector, the two light emitting diodes each comprising an illuminant mounted on the insulating body and mounted on the illuminator A pin on the circuit board, the pin being connected to the circuit board being adjacent to the first side edge or the second side edge. The electrical connector of claim 2, wherein the circuit board has a first soldering through hole for pin insertion mounting, and the second connecting portion further has a socket for inserting and mounting the pin terminal. And a second soldering via hole between the first transformer and the second soldering via hole or between the fourth transformer and the second soldering via hole. The electrical connector of claim 3, wherein the four chip transformers each include a primary side coil electrically connected to the mating terminal, and a secondary side coil electrically connected to the pin terminal, for the foregoing An I-shaped iron core wound with a primary side coil and a secondary side coil, and a primary side coil electrode piece disposed at an end of the I-shaped iron core for connecting the primary side coil and a secondary side coil electrode piece for connecting the secondary side coil. The electrical connector of claim 4, wherein the primary side coil electrode piece and the secondary side coil electrode piece of the four transformers are laterally disposed, and the secondary side coil electrode piece of the first transformer is adjacent to the first edge, The secondary side coil electrode piece of the fourth transformer is adjacent to the second edge, and the primary side coil electrode piece of the second transformer and the third transformer is disposed opposite to the primary side coil electrode piece of the first transformer. The electrical connector of claim 5, wherein the electrical connector further has a shielding housing covering the insulative housing, the first side edge being provided with a first soldering gap for connecting to the shielding housing The second edge is provided with a second soldering notch for connecting to the shielding shell, the secondary side coil electrode piece of the first transformer is close to the first soldering notch, and the secondary side coil electrode piece of the fourth transformer is close to the first The second weld notch is laterally aligned with the second weld notch, and the first transformer and the fourth transformer are also laterally aligned and adjacent to the first weld notch and the second weld notch, respectively. The electrical connector of claim 1, wherein the projections of the second transformer and the third transformer in the longitudinal direction only partially overlap, and the portion of the second transformer is laterally aligned between the first transformer and the fourth transformer. In the space, a portion of the third transformer is also located in a lateral alignment space of the first transformer and the fourth transformer, another portion of the second transformer is adjacent to the first connection portion, and another portion of the third transformer is adjacent to the second connection unit. The electrical connector of claim 1, wherein the circuit board comprises a first side and a second side, the four transformers are disposed on the first side, and the electrical connector further comprises four patches A common mode suppressor in which two patch-type common mode suppressors are mounted on the first side, and the other two patch type common mode suppressors are mounted on the second side. The electrical connector of claim 8, wherein the four patch type common mode suppressors are longitudinally disposed, and the two patch type common mode suppressors on the first side are mounted adjacent to the first connection. The location of the department. The electrical connector of claim 8, wherein the terminal module comprises an insulating carrier that fixes the mating terminal and the pin terminal, and the insulating carrier is provided for receiving electronic components on the second side of the circuit board. The receiving groove has a depth that can accommodate the height of the chip type common mode suppressor and cannot accommodate the height of the lower chip type transformer.